續一切經音義 9.113

9.113

𡖦甥（上五會反下音生爾雅云姑之子舅之為甥甥曰謂我舅者吾謂之甥說文作𱰘訓同爾雅也）。

𡖦甥 (Sister's child / nephew: the first character is fanqie 五會 [wèi]; the second character is pronounced 生 [shēng]. The Erya says: 'The son of a father's sister or a mother's brother is called a 甥. A nephew says: "Those who call me uncle, I call them 甥."' The Shuowen writes 𱰘, with the same definition as in the Erya.)